Radioisotope contaminations from releases of the Tomsk–Seversk nuclear facility (Siberia, Russia)

Autor: Laurent Pourcelot, L.P. Rhikvanov, A. Mezhibor, Jost Eikenberg, François Gauthier-Lafaye, G. Le Roux, Hans-Frieder Beer, Peter Stille, Ph. Renaud
Přispěvatelé: Centre de géochimie de la surface (CGS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Centre National de la Recherche Scientifique (CNRS)-Université Louis Pasteur - Strasbourg I-Institut national des sciences de l'Univers (INSU - CNRS)
Jazyk: angličtina
Rok vydání: 2008
Předmět:
Radioactive Fallout
Water Pollutants
Radioactive
010504 meteorology & atmospheric sciences
Health
Toxicology and Mutagenesis
[SDV]Life Sciences [q-bio]
chemistry.chemical_element
Americium
010501 environmental sciences
01 natural sciences
Russia
Soil
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry
Radiation Monitoring
Plutonium-240
Soil Pollutants
Radioactive
Environmental Chemistry
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
Waste Management and Disposal
ComputingMilieux_MISCELLANEOUS
0105 earth and related environmental sciences
Radioisotopes
Fission products
Geography
Nuclear fuel
Radiochemistry
Radioactive waste
General Medicine
Pollution
Soil contamination
Kazakhstan
Plutonium
6. Clean water
chemistry
Cesium Radioisotopes
13. Climate action
Environmental chemistry
Radioactive Hazard Release
Plutonium-239
Power Plants
Radioactive Pollutants
Zdroj: Journal of Environmental Radioactivity
Journal of Environmental Radioactivity, Elsevier, 2008, 99 (4), pp.680-693. ⟨10.1016/j.jenvrad.2007.09.008⟩
Journal of Environmental Radioactivity, Elsevier, 2007, in press. ⟨10.1016/j.jenvrad.2007.09.008⟩
ISSN: 0265-931X
1879-1700
DOI: 10.1016/j.jenvrad.2007.09.008⟩
Popis: International audience; Soils have been sampled in the vicinity of the TomskeSeversk facility (Siberia, Russia) that allows us to measure radioactive contaminations due to atmospheric and aquatic releases. Indeed soils exhibit large inventories of man-made fission products including 137Cs (ranging from 33,000 to 68,500 Bq m!2) and actinides such as plutonium (i.e. 239þ240Pu from 420 to 5900 Bq m!2) or 241Am (160e1220 Bq m!2). Among all sampling sites, the bank of the Romashka channel exhibits the highest radioisotope concentrations. At this site, some short half-life gamma emitters were detected as well indicating recent aquatic discharge in the channel. In comparison, soils that underwent atmospheric depositions like peat and forest soils exhibit lower activities of actinides and 137Cs. Soil activities are too high to be related solely to global fallout and thus the source of plutonium must be discharges from the Siberian Chemical Combine (SCC) plant. This is confirmed by plutonium isotopic ratios measured by ICP-MS; the low 241Pu/239Pu and 240Pu/239Pu atomic ratios with respect to global fallout ratio or civil nuclear fuel are consistent with weapons grade signatures. Up to now, the influence of TomskeSeversk plutonium discharges was speculated in the Ob River and its estuary. Isotopic data from the present study show that plutonium measured in SCC probably constitutes a significant source of plutonium in the aquatic environment, together with plutonium from global fallout and other contaminated sites including Tomsk, Mayak (Russia) and Semipalatinsk (Republic of Kazakhstan). It is estimated that the proportion of plutonium from SCC source can reach 45% for 239Pu and 60% for 241Pu in the sediments.
Databáze: OpenAIRE
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